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/*
* Copyright (c) 2017-2024 OARC, Inc.
* Copyright (c) 2011-2017, IIS - The Internet Foundation in Sweden
* All rights reserved.
*
* This file is part of PacketQ.
*
* PacketQ is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* PacketQ is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with PacketQ. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __packetq_packet_handler_h
#define __packetq_packet_handler_h
#include <assert.h>
#include <cctype>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <string>
#include <vector>
#include "sql.h"
#include "tcp.h"
namespace packetq {
class Table;
class Row;
inline int get_int_h(unsigned char* data)
{
return data[0] | (data[1] << 8) | (data[2] << 16) | (data[3] << 24);
}
inline int get_short_h(unsigned char* data)
{
return data[0] | (data[1] << 8);
}
inline int get_int(unsigned char* data)
{
return data[3] | (data[2] << 8) | (data[1] << 16) | (data[0] << 24);
}
inline int get_short(unsigned char* data)
{
return data[1] | (data[0] << 8);
}
RefCountString* v4_addr2str(in6addr_t& addr);
RefCountString* v6_addr2str(in6addr_t& addr);
class Payload {
public:
char m_p[0x10000];
int m_size;
Payload()
{
m_size = sizeof(m_p);
}
inline char* alloc(int size)
{
if (size > m_size)
return 0;
return m_p;
}
};
class IP_header {
public:
IP_header()
: s(0)
, us(0)
, ethertype(0)
, src_port(0)
, dst_port(0)
, proto(0)
, ip_ttl(0)
, ip_version(0)
, id(0)
, length(0)
, fragments(0)
, ident(0)
, offset(0)
{
memset(&src_ip, 0, sizeof(src_ip));
memset(&dst_ip, 0, sizeof(dst_ip));
}
void reset();
int decode(unsigned char* data, int ether_type, int id);
unsigned int s;
unsigned int us;
unsigned short ethertype;
in6addr_t src_ip;
in6addr_t dst_ip;
unsigned short src_port;
unsigned short dst_port;
unsigned short proto;
unsigned short ip_ttl;
unsigned short ip_version;
unsigned int id;
unsigned int length;
unsigned int fragments;
unsigned int ident;
unsigned int offset;
};
class Packet_handler;
class IP_header_to_table {
public:
enum {
COLUMN_ID,
COLUMN_S,
COLUMN_US,
COLUMN_ETHER_TYPE,
COLUMN_PROTOCOL,
COLUMN_IP_TTL,
COLUMN_IP_VERSION,
COLUMN_SRC_PORT,
COLUMN_DST_PORT,
COLUMN_SRC_ADDR,
COLUMN_DST_ADDR,
COLUMN_FRAGMENTS
};
void add_packet_columns(Packet_handler& packet_handler);
void on_table_created(Table* table, const std::vector<int>& columns);
void assign(Row* row, IP_header* head, const std::vector<int>& columns);
private:
Int_accessor acc_id;
Int_accessor acc_s;
Int_accessor acc_us;
Int_accessor acc_ether_type;
Int_accessor acc_protocol;
Int_accessor acc_ip_ttl;
Int_accessor acc_ip_version;
Int_accessor acc_src_port;
Int_accessor acc_dst_port;
Int_accessor acc_fragments;
Text_accessor acc_src_addr;
Text_accessor acc_dst_addr;
};
class Packet {
public:
enum ParseResult {
ERROR,
OK,
NOT_SAMPLED
};
Packet(unsigned char* data, int len, int s, int us, int id, int link_layer_type)
{
m_s = s;
m_us = us;
m_data = data;
m_len = len;
m_id = id;
m_link_layer_type = link_layer_type;
}
ParseResult parse(Packet_handler* handler, const std::vector<int>& columns, Row& destination_row, bool sample);
bool parse_ethernet();
bool parse_sll();
bool parse_ip(unsigned char* data, int len, int ether_type);
bool parse_transport(unsigned char* data, int len);
IP_header m_ip_header;
unsigned char* m_data;
int m_len;
int m_s;
int m_us;
int m_id;
int m_link_layer_type;
};
struct Packet_column {
const char* name;
const char* description;
int id;
Coltype::Type type;
};
class Packet_handler {
public:
Packet_handler()
: table_name(0)
{
}
virtual ~Packet_handler()
{
}
Table* create_table(const std::vector<int>& columns);
// for actual packet handlers to fill in
virtual void on_table_created(Table* table, const std::vector<int>& columns) = 0;
virtual Packet::ParseResult parse(Packet& packet, const std::vector<int>& columns, Row& destination_row, bool sample) = 0;
const char* table_name;
std::vector<Packet_column> packet_columns;
void add_packet_column(const char* name, const char* description, Coltype::Type type, int id);
};
void init_packet_handlers(bool escape_dnsnames);
void destroy_packet_handlers();
Packet_handler* get_packet_handler(std::string table_name);
} // namespace packetq
#endif // __packetq_packet_handler_h
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